.this {
    border: 0px solid darkgray;
    color: #222;
    height: 50px;
}

.nav_ctner {
    background: #666;
}

.nav_item {
    color: #fff;
    text-decoration: none;
    padding: 10px;
}

.nav_ {
    padding: 0
}

.nav_brand {
    margin: 0;
    line-height: 50px;
    color: #fff;
}

.nav_ > li {
    float: left;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix:after, .clearfix:before {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}


.clearfix:after, .clearfix:before {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;

}
.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix:after, .clearfix:before {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}

.ctner {
    padding: 15px;
}
ul {
    list-style: none;
    padding: 0;
}

ul li {
}